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2 years ago

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I need help with this. Lab: Conservation of Linear MomentumAssignment: Lab Report Urgent!!

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kifflom [539]2 years ago

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Which series of energy transfers happens when light from the sun is used to power a light bulb?

sergij07 [2.7K]

Answer:

b. Light ➪ mechanical ➪ electrical

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2 years ago

Which is an important step in how an electric motor uses magnetic force to produce motion?

Romashka [77]

The basic idea of an electric motor is really simple: you put electricity<span> into it at one end and an </span>axle<span> (metal rod) rotates at the other end giving you the power to drive a machine of some kind. Hope this helps. Have a nice day. Feel free to ask more questions.</span>

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2 years ago

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Using a cathode ray tube, Thomson confirmed that

Natasha2012 [34]

<span>atoms are made of particles that have a negative charge.</span>

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3 years ago

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A golf ball with an initial angle of 34° lands exactly 240 m down the range on a level course.

g100num [7]

Answer:50.39 m/s,

40.46 m

Explanation:

Given

launch angle $=34^{\circ}$

Range=240 m

We know that Range $=\frac{u^2sin2\theta }{g}$

$240=\frac{u^2sin(68)}{9.81}$

u=50.39 m/s

(b)maximum height of projectile is given by

$H=\frac{u^2sin^2\theta }{2g}$

$H=\frac{50.39^2(sin34)^2}{2\times 9.81}$

H=40.46 m

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2 years ago

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What voltage battery would you need to send 2.5A of current through a light bulb of resistance 3.6 ohm

nadezda [96]

<h3><u>Given</u> :</h3>

Current flow light bulb = 2.5 $\sf{A}$

Resistance of light bulb = 3.6Ω

<h3><u>To Find </u>:</h3>

We have to find voltage of battery $.$

<h3><u>Solution</u> :</h3>

➠ As per ohm's law, current flow through a conductor is directly proportional to the applied potential difference.

➝ V ∝ I

➝ <u>V = I × R</u>

Where, R is the resistance of conductor.

⇒ V = I × R

⇒ V = 2.5 × 3.6

⇒ <u>V = 9 volt</u>

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2 years ago